Five years ago, mathematicians Dawei Chen and Quentin Gendron were trying to untangle a difficult area of algebraic geometry involving differentials, elements of calculus used to measure distance ...

COPD makes it hard to breathe in as much air as you need. And without enough oxygen, you may have other problems. Fortunately, there are simple things you can do. Stop smoking, exercise, and closely ...

Feb. 16, 2026 As cash transfer programs expand across the United States, critics often warn that giving people money could spark reckless behavior, leading to injuries or even deaths. But a sweeping ...